Barnegat Light is a borough in Ocean County, New Jersey, United States. As of the 2010 United States Census, the borough's population was 574, reflecting a decline of 190 from the 764 counted in the 2000 Census, which had in turn increased by 89 from the 675 counted in the 1990 Census. The borough borders the Atlantic Ocean on Long Beach Island and is home to Barnegat Lighthouse.Barnegat Light was formed as a Borough by the New Jersey Legislature on November 2, 1948, to replace Barnegat City borough, which in turn had been created on March 29, 1904, from portions of Long Beach Township.